Combination-square.



W. CARNEY & F.l C. CHASE. COMBINATION SQUARE.

APPucATfoN Hummm/31,1915.

l ,25595. Patented MaI-.12,1918.

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WILLIAM CARNEY AND FREDERICK C; CHASE, OE FREDERICKSURG, IOWA.

COMBINATION-SQUARE.

lessees- Spvecicationof Letters Patent.

Patented Mal'. 12,1918.;

Application ledJuly'. 31, 1915. Serial No. 42,876.V

ToaZ/wlwm t may concern:

Be it known lthat We, WILLIAM. CARNEY.

and FREDERICK4 C. CHASE, citizens. of the United States, residin at Fredericksburg, in the countyof Chic asaiv andState. of loiva,'have invented lcertain new and useful Improvements iii Combination-Squares, of Which'the following is a specilication.

This v invention relatesto carpenters tools,

.particularly'to squares, and has for -its.ob-.

An .important ,object is the provision` 4of a device ,of tliis character-in which the blades maybe moved to.y andlieldat an intermefA diateposition for squaring timbers, and in which. tlie..blades ymay be .moved and ad.

justedin either d irectionfto facilitate, the

use'of the tool by either right or left handed persons.

The most essential object is the.provisiony of a square of this character in .whiclithe arms. andl blades V.are independently movable so that in caseruns are uneven vthe blades for markingthe side l.and plumb cutsmaybe adjusted at diierent'angles.

Another Objectis the provision ofa mov-` ableplate-.upon which one Vof the blades is.

pivotedwhereby the lines markedv be Ycaused to intersect at certain angles, three stops vbeing provided for .the sliding plate, tlie extreme stops being for positioning the blade when bothblades are at van angle, and.

the intermediate one being forpositioning vtheblade Whenasquare .cut is to be marked.

A further object is the provision of a toolV of :this character Whichvill be simple' vin use,.eiticient inservice, inexpensive and -durable, and Whichmavbeused by those un-. skilled in the useof instruments ofprecision.

With these and other objects and ad# vantages in View, the invention consists in.

Figure l isa front elevationof tlie devicein positionupona-timber to be mar.ked,.

Fig@ is a top plan-view thereof,

Fig.. 3 is a vlongitudinal 1sectional View on the line3-3 of Fig. 2, and

Fig. is a cross sectional'view onY the line l-toilig. 1.

Referringvmore particularly to the draivings, tlienumeral 1 designates the body porfv tionf or frame of Itlie device, which is formed of metal and which. comprises tWo ,plates 2 and 3 extending at right angles. The plate 2 terminates vat one end in ,av reduced extension 4, While the otherplate is cutaway,

as slioivn at ,5, at itscorresponding end,v The plate 2 is provided with .a longitudinal slot ,l

6 andiiiitli cut-out portion 7 .or.a. pur pose to be described. Pivotally. mounted, upon. .the y reduced extension 4, as .shown at, 8, is-a blade 9 which may be swungin etlifer,

dii;ection. An arm 10 is y.fpivotally connectedwith4 the blade. 9 as. shown at 11, and isf, apertured. .at ,its .freeend for the passage, of a bolt 12 which is slidable in the slot 6 and."

which. ,carries ta clamping nut .13.. A scale 14C .is markedupon the vp late2 and hasitsf. graduatioiis ranging. from 0` at ,its center to,

16at .its ends, eacli graduation representing a riseoif one inchper foot run.

The .plate Bof tliebodyportion ispiovidedwvith a slot 15 extending longitudinally .,the reof vand is further provided 4adjaf cent. its cut-away ends 5 with giiidegrivets, lwvliicli extend through slots 17 .in a plate,

plate 3. A strip 19 of spriiigmetal is dis-.

posed upon the. .plate. 18 and is. provided With a yslot ,20. registeringv with `onefof .tlie slots .17 A locking screw 21 passes through alined openings in the plate 1 8 andy spring strip 19, and is engageable Within aiselectedjV oneof three threaded opeiiings,22, 23, andA 24,; inthe plate 3. The plate 18 and strip 19 may thus be moved into andheldinany. de-. sired one of threepositions fora purpose which Will become apparenthereinafter.. A, blade 25 is pivotally connected, as sliQWnat.. 2,.With the outer ends .of the platelSaiid strip19. An arm 27 is pivotally.connected, as shown at 28, ivth the blade V25, and is, apertured at its free end for. the passage of@ a bolt 29 slidable Within the slot 15 and.car. iyinga clampiiig.nut30. A scale 31 exactlyf similar vtothe scale 14 is marked,upontlie'y plate 3. Botlitlie arms y1O.a1 i d27 are providediipon theirlv inner ends with projecting points V32 positioned tobe movable. over the scalesld and 31respectively.

In the use of the device, when it is desired to mark a timber for squaring it, the plate 1S is ,disposed in its intermediate position, as clearly shown in Fig. 2, with the screw 21 engaged within the threaded opening 23,'and both arms 10 and 27 are moved until the points 32indicate 0 on both the scales 14 and 31. The blades 9 and 25 willy then extend at right angles to the edge of the timber and to each other. A line drawn along the edge of these blades will mark the side and plumb cuts for making a square end.

When it is desired tomark a rafter with the side and plumb cuts necessary for a roof of a certain pitch, where the pitches are equal, it is merely necessary to slide the arms 10 and 27 along the body 1 until the points 82 indicate the proper gra'duations of the rise in inches per foot run upon the scales '14: and 31, the graduations corresponding. Before this is done, however, the

vplate 18 and strip 19 should be moved either outwardly or inwardly to conform to the right or left ratter, .the screw 21 being then engaged in Veither the threaded opening 22 or the opening 24, as the case may be.V The Vblades 9 and 25 being thus positioned, a line drawn upon a rafter along their edges will give the proper marking for the necessary cuts.

vWhen the pitches of a roof are uneven, the arm 27 is moved until it indicates the proper graduation to give the correct angle to the blade 25, and the arm 10 is moved until itindicates the proper graduation to position the blade 9 at the otherproper angle. The marks are then made as in the previous instances. It is, of course, understood that the clamping nuts 18 and30 are tightened when the blades have been properly adjusted, so as to prevent undesired movement thereof.

VAs the scales runboth ways from 0 it will be readily seen that the device may be used from either the right or Vlett side with equal ease. By setting both arms 10 and 27 to indicate O, the device may be used as a trysquare and by setting the blades 9 and 25 at the correct angles, it may be used as a bevelsquare or miter-square.

The blades 9 and 25 may also be provided at arbitrary intervals, such as one-half inch, with holes 33. By shitting the blades 9 and 25 to the desired position and inserting a pencil point within a desired one ot the holes 33, and moving the entire device along a beam or board, the eiiect of a marking gage is produced. After the nut 13 or 30 is loosened, a pencil ,point may be inserted in the proper one of the holes 13 and the arcl of a circle'be struck by swinging the blade.

From the foregoing description and a study of the drawings, it will be apparent that there has thus been provided a novel and eiiicient tool"` or instrument whereby rafters, beams, and the like may be accurately marked atcertaln angles andwwhereby Vvarious other purposes may be accomplished.

It will be readily understood that the right is reserved to make such changes inV the form, construction, and arrangement of parts, as will come within the scope of the Jfollowing claims.

Having thus described our invention what weV claim as new and desire to secure by Letters Patent is i 1. A device of theV character described,

one of said blades may be moved longitu-Y dinally upon said body portion.

2. A device of the characterdescribed, `V

comprising a body portion, a blade pivotally connected therewith, a plate slidable'upon Y said body portion, a second blade pivotallyV connected with said plate and extending in a plane at right angles to Vsaid iirst named blade and an arm pivotally connected with each of said blades and slida'bly connected with said body portion, said body portion being provided with graduations traveled over by said arms.

3. A device ot the character described, comprising a body portion right-angular in cross-section, a blade pivoted upon one face ot' said body portion, a plate slidable upon the other face of said body portion, means for securing said slidable plate in a selected positionupon said 'body portion, a blade pivotally connected with said vslidableplate and extending in a plane at right angles to the plane of said first named'blade, and

lan arm pivotally connected with 'each blade yand slidably'connected with the corresponding face ot said body portion, said body portion being provided with graduated scales traveled'o'ver by the ends of said arms.

4-.'A1device of the character described, comprising a body portion formed of'two sections extending in planes at right angles Whereby the angular positions of said blades may be varied, both faces of said body portion being provided with graduations traveled over by the inner ends of said arms.

5. A device of the character describedl '1 upon said plate, and an arm pivotally connected With each blade and the associated section of said body portion, said body portion being provided with graduations traveled over by said arms.

6. A device of the character described, comprising a body portion formed of two sections extending in planes at right angles to each other, a blade pivotally connected with one end of one of said sections, a plate slidable upon the corresponding end of the other section, means for guiding said plate upon said second named section, said second named section being provided with a plurality of holes beneath said plate, a screw passing through said plate and engageable Within a selected one of said holes, a blade pivotally connected with said plate, and an arm pivotally connected with each of said blades and slidably connected With the adjacent section, said section being provided With graduations traveled over by said arms.

In testimony whereof We ailix our signatures in the presence of two Witnesses.

VILLIAM CARNEY. FREDERICK C. CHASE.

Witnesses:

G. M. PADDEN, C. E. LEACH.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

Washington, D. C." 

